usr/src/sys/vax/include/clock.h

/*	clock.h	4.8	82/10/31	*/

/*
 * VAX clock registers
 */

#define	ICCS_RUN	0x00000001
#define	ICCS_TRANS	0x00000010
#define	ICCS_SS		0x00000020
#define	ICCS_IE		0x00000040
#define	ICCS_INT	0x00000080
#define	ICCS_ERR	0x80000000

#define	SECDAY		((unsigned)(24*60*60))		/* seconds per day */
#define	SECYR		((unsigned)(365*SECDAY))	/* per common year */
/*
 * TODRZERO is the what the TODR should contain when the ``year'' begins.
 * The TODR should always contain a number between 0 and SECYR+SECDAY.
 */
#define	TODRZERO	((unsigned)(1<<28))

#define	YRREF		1970
#define	LEAPYEAR(year)	((year)%4==0)	/* good till time becomes negative */

/*
 * Has the time-of-day clock wrapped around?
 */
#define	clkwrap()	(((unsigned)mfpr(TODR) - TODRZERO)/100 > SECYR+SECDAY)

/*
 * Software clock is software interrupt level 8,
 * implemented as mtpr(SIRR, 0x8) in asm.sed.
 */
Commit	Line	Data
	1	/* clock.h 4.8 82/10/31 */
	2
	3	/*
	4	* VAX clock registers
	5	*/
	6
	7	#define ICCS_RUN 0x00000001
	8	#define ICCS_TRANS 0x00000010
	9	#define ICCS_SS 0x00000020
	10	#define ICCS_IE 0x00000040
	11	#define ICCS_INT 0x00000080
	12	#define ICCS_ERR 0x80000000
	13
	14	#define SECDAY ((unsigned)(246060)) /* seconds per day */
	15	#define SECYR ((unsigned)(365SECDAY)) / per common year */
	16	/*
	17	* TODRZERO is the what the TODR should contain when the ``year'' begins.
	18	* The TODR should always contain a number between 0 and SECYR+SECDAY.
	19	*/
	20	#define TODRZERO ((unsigned)(1<<28))
	21
	22	#define YRREF 1970
	23	#define LEAPYEAR(year) ((year)%4==0) /* good till time becomes negative */
	24
	25	/*
	26	* Has the time-of-day clock wrapped around?
	27	*/
	28	#define clkwrap() (((unsigned)mfpr(TODR) - TODRZERO)/100 > SECYR+SECDAY)
	29
	30	/*
	31	* Software clock is software interrupt level 8,
	32	* implemented as mtpr(SIRR, 0x8) in asm.sed.
	33	*/